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Tisza

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description Tisza Overview

The Tisza is a major river of Central and Eastern Europe and the longest tributary of the Danube, measuring about 966 kilometers. Its basin is shared by Ukraine, Slovakia, Hungary, Romania, and Serbia, while the river itself flows through or along several of those countries before joining the Danube near Titel in Serbia. The river has extensive floodplains and has been modified by dams, levees, and channel regulation.

help Tisza FAQ

How long is the Tisza River and which countries share its basin?

The Tisza is about 966 kilometers long and is the longest tributary of the Danube. Its basin is shared by Ukraine, Slovakia, Hungary, Romania, and Serbia.

Where does the Tisza join the Danube?

The Tisza flows through Serbia and joins the Danube in the Vojvodina region. That confluence places the river within the lower Danube drainage system before the Danube reaches the Black Sea.

Why is the Tisza called the Danube’s longest tributary?

At roughly 966 kilometers, the Tisza is longer than the Danube’s other named tributaries, even though its discharge is not the largest. The Sava carries more flow on average, while the Tisza is the longest by channel length.

What happened to the Tisza in the Baia Mare pollution disaster?

In January 2000, a cyanide-containing mine-waste spill from Baia Mare in Romania entered the Tisza system. The contamination traveled downstream toward the Danube and caused major concern for fish, drinking water, and river ecosystems. [The ICPDR identifies the five-country basin](https://www.icpdr.org/danube-basin/sub-basins/tisza-basin?page=1).

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